a bell ring every 15 seconds another bell ring 30 seconds.at 3:00 pm the 2 bells ring simultaneously

Discussion in 'Calculator Requests' started by math_celebrity, Jun 24, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    a bell ring every 15 seconds another bell ring 30 seconds.at 3:00 pm the 2 bells ring simultaneously.at what time will the bells ring again at the same time

    The Least Common Multiple (LCM) of 15 and 30 is 30:

    Therefore, 30 seconds from now, 3:00, is when the 2 bells will ring simultaneously. We add 30 seconds to 3:00 and get: 3:00 and 30 seconds.
     

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